They are!
And compact disc have a great thing going for them: 16 bit 44.1 kHz stereo is basically where it's at. Sure some are going to say you need 88.2 / 24 bit or whatever but IMO the creation of the CD audio format in the late seventies / early eighties was a stroke of genius. 16 bit 44.1 kHz stereo is my endgame. I'm totally fine with it since my first "portable" CD player (was weighting a ton) in the late eighties up until today. And it's going to be sufficient until my last days.
I don't need "more" than that.
Nowadays I don't listen to my CD directly: I rip them to FLAC and listen mostly to my FLAC files (my car takes WAV or mp3, not FLAC though, so I convert my FLAC to mp3 for the car) and, rarely, I listen to a CD (weirdly enough my car still has a CD player).
I'm stockpiling on CDs while they cost nothing. And I don't care if they start failing: I legally own bitperfect archives.
I love to own my music.
I still cannot believe that the first documents describing the CD format came out in 1980... That's 43 years ago.
> I don't need "more" than that.
> I'm stockpiling on CDs while they cost nothing
I'm with you regarding CDs, but 16 bit 44.1 kHz is only sufficient if you have good playback hardware (like a good DAC).
If not, a lower-end DAC can give more accurate audio reproduction just by throwing more data at the problem. For people who don't own/store their music but just rent/stream it, going to higher that 16 bit 44.1 kHz makes sense.
Think like screen resolution and text: displaying text shouldn't be that different in 1080p vs 4k. However, due to the algorithms use for scaling that also smooth the pixels at the border of each letter like ClearType (https://www.howtogeek.com/28790/tweak-cleartype-in-windows-7...), the higher resolutions get an advantage unless you use an old fixed-size font.
It's roughly the same with audio: if you use CDs as a source for your FLACs, get hardware a good DAC and the difference is unlikely to be perceptible. Use your ears and experimentation.
You don't find anything rare because the volunteers at those charity shops get first dibs on everything (officially or no), and the shops themselves do; they will pick out the good record and either flog them on ebay or whatever, or move them to a more upmarket shop where the name changes from a charity shop but a vintage or antique shop.
I never expect to find anything valuable or collectable at a charity shop anymore. I mean besides the staff, there will always be people scouring it at all hours of the day looking for collectibles.
The other one there is house clearings; in some cases, when someone dies with no relatives or nobody interested, they'll hire a house clearing service, who also get first dibs on anything valuable or collectable. The rest is sold in either their own shops or sent to a charity shop.
I would be looking over my shoulder all the way home to make sure I got away with it. :)
Interesting tidbit I had held on to a record player for years to be able to digitize LPs, finally got rid of it (and the nice audio card that I used because it was no longer compatible with recent motherboards) and sure enough, within a year I find a whole slew or extremely rare Dinu Lipatti LPs and EPs (which have since gone to a pianist who also frequents HN because I think his is by far the better home for these) and that Wendy Carlos record as well as some other really nice ones. So I doubt I will ever play it, but still I'm super happy to have found it.
And if you're very unlucky it was made through an intermediary set of positive/negative.
Walk in on the last day of the sale, an hour before close, "fifty bucks for what's left of the records", walk out with six crates of vinyl.